Measurement of Working Area of Agricultural Machinery Based on Buffer Grid Method
Today,precision agriculture is a new trend of agricultural development in the world.In this paper,a buffer grid ar-ea algorithm is designed to solve the problem of repeated area calculation caused by the traditional distance algorithm not being able to record the historical operation area.First,two adjacent track points are connected and a parallel rectangular buffer is generated.Secondly,the track points in the rectangular buffer are rasterized,and their attribute values are encoded and stored,representing the operating region.Finally,the working area of agricultural machinery is calculated by the single grid area and the number of grids representing the working area.In the experiment,shuttle method and rotary method are used to work on the same irregular shape test field.The average relative error of shuttle method is 1.90%,and the accuracy of shuttle method is 4.36%higher than that of tra-ditional distance area algorithm.The average relative error of the buffer method is 1.97%,which is 20.51%more accurate than the traditional range-area algorithm.The results show that the buffer grid area algorithm is reliable and can provide data reference for ag-ricultural machinery tillage measurement.
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